the u.s. leaned heavily on strategic interventions to help counter the influence of communism. >> the reagan doctrine was a notion that we would support those that sought to oppose soviet domination. >> during the cold war there was a polarized world - there was the soviet union, there was the united states and a lot of our interventions were used to block the advance of communism, and so very ideological basis for our, our interventions. >> and the u.s. has long retained the power to intervene at will. >> the united states has the capability, military capability, the power, literally the sort of capability to get things done. in addition it has the moral suasion and it has the ability to bring others along. so with that comes a lot of responsibilities. >> we have to understand the role that the united states has played since the end of the second world war and still plays today and that is as a provider of security, not only to itself, but to lots of nations around the world. >> i think the i